cups: fix default cupsd.conf add gssapi build option (#5649)

The cupsd.conf currently provided by the cups package contains a Kerberos
section. Since cupsd is built without gssapi support, the daemon fails
to verify it's configuration and refuses to start. This commit adds a
build option to make it possible to build the package with gssapi
support and also provides a patch pulled in from Alpine Linux for the
cupsd.conf to be able to start the daemon without building it with gssapi
support.

srcpkgs/cups/patches/default-config-no-gssapi.patch

@@ -0,0 +1,26 @@
+--- a/conf/cupsd.conf.in
++++ b/conf/cupsd.conf.in
+@@ -145,12 +145,12 @@
+ 
+   # Job-related operations must be done by the owner or an administrator...
+   <Limit Create-Job Print-Job Print-URI Validate-Job>
+-    AuthType Negotiate
++    AuthType Default
+     Order deny,allow
+   </Limit>
+ 
+   <Limit Send-Document Send-URI Hold-Job Release-Job Restart-Job Purge-Jobs Set-Job-Attributes Create-Job-Subscription Renew-Subscription Cancel-Subscription Get-Notifications Reprocess-Job Cancel-Current-Job Suspend-Current-Job Resume-Job Cancel-My-Jobs Close-Job CUPS-Move-Job CUPS-Get-Document>
+-    AuthType Negotiate
++    AuthType Default
+     Require user @OWNER @SYSTEM
+     Order deny,allow
+   </Limit>
+@@ -171,7 +171,7 @@
+ 
+   # Only the owner or an administrator can cancel or authenticate a job...
+   <Limit Cancel-Job CUPS-Authenticate-Job>
+-    AuthType Negotiate
++    AuthType Default
+     Require user @OWNER @CUPS_DEFAULT_PRINTOPERATOR_AUTH@
+     Order deny,allow
+   </Limit>

srcpkgs/cups/template

@@ -1,7 +1,7 @@
 # Template file for 'cups'
 pkgname=cups
 version=2.2.2
-revision=1
+revision=2
 patch_args="-Np1"
 short_desc="Common Unix Printing System"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
@@ -13,7 +13,7 @@ checksum=f589bb7d5d1dc3aa0915d7cf2b808571ef2e1530cd1a6ebe76ae8f9f4994e4f6
 hostmakedepends="automake pkg-config poppler-utils gnutls-devel avahi-libs-devel"
 makedepends="acl-devel libjpeg-turbo-devel libpng-devel tiff-devel
  gnutls-devel pam-devel poppler-devel libusb-devel avahi-libs-devel
- libpaper-devel"
+ libpaper-devel $(vopt_if gssapi mit-krb5-devel)"
 depends="xdg-utils"
 conf_files="/etc/pam.d/cups /etc/cups/*.conf"
 make_dirs="
@@ -23,6 +23,8 @@ make_dirs="
 	/var/spool/cups 	0755 cups lp
 	/etc/cups/ssl 		0700 cups lp"
 
+build_options="gssapi"
+
 # Package build options
 system_accounts="cups"
 cups_pgroup="lp"
@@ -44,12 +46,12 @@ do_configure() {
 	./configure ${configure_args} --sbindir=/usr/bin --libdir=/usr/lib \
 		--enable-acl --enable-dbus --enable-raw-printing \
 		--enable-threads --with-logdir=/var/log/cups \
-		--with-docdir=/usr/share/cups/doc --disable-gssapi \
+		--with-docdir=/usr/share/cups/doc \
 		--with-cups-user=cups --with-cups-group=lp --enable-relro \
 		--enable-libpaper --enable-avahi --enable-pam --enable-ssl \
 		--with-menudir=/usr/share/applications --with-xinetd=/etc/xinetd.d \
 		--with-optim="${CFLAGS}" --without-systemd \
-		--without-perl --without-php --without-python
+		--without-perl --without-php --without-python $(vopt_enable gssapi)
 }
 do_build() {
 	# Do not run genstrings binary in cross builds.